D9h blade parts info

[gary808]

Here’s some pics of the line boring and blade work from the last few weeks
Some befores

 

[gary808]

 

[gary808]

 

[gary808]

 

[gary808]

 

[gary808]

 

[Old Magnet]

You've certainly been busy. Looks like just about everything on that blade was flat wore out.
What's the diameter of the boring bar your using?

 

[gary808]

Yep it was so sloppy that you couldn’t do anything to hold a grade. And the swing was bashing the idlers hard enough where they broke them to pieces. I’m assuming most of the ripping was done with the blade corner bits.
The bar I’ve been using is 1 1/8 that we made from a old ram shaft. We just drill then broach the 1/2 square holes and thread in set screws. The drive adapter is aluminum I machined up and drilled 3/8 drive pins.

 

[John C.]

Really nice work! Where at on the big Island are you? I was in Kona last year doing a project.

 

[gary808]

Really nice work! Where at on the big Island are you? I was in Kona last year doing a project.

Thanks, and I’m on the hill side of the island in keaau. It’s about 20 mins out of Hilo.

 

[Old Magnet]

Thanks for the info. I went with an 1-1/2" bar but that's a little to big for the smaller jobs.
I went with Sunnen hone drive parts, 5/8 NC u-joints and thread to spindle adapter. Also was able to find a 5/8 NC male to Morse taper adapter to fit my Milwaukee mag drill.

 

[John C.]

Over on the rainy side. I thought the vegetation in the background looked a little thick. Are you south of Hilo?

 

[gary808]

N

Thanks for the info. I went with an 1-1/2" bar but that's a little to big for the smaller jobs.
I went with Sunnen hone drive parts, 5/8 NC u-joints and thread to spindle adapter. Also was able to find a 5/8 NC male to Morse taper adapter to fit my Milwaukee mag drill.

i was going to go with a1 1/2 but after looking at these holes I figured smaller would be easier. I do want to build a few larger bars though. How does the Milwaukee drill work for you? Is it auto feed?
I originally had a Morse taper adapter but without a u joint it kept walking loose from the slight misalignment.
Do you have any pictures of you set up?

 

[gary808]

Over on the rainy side. I thought the vegetation in the background looked a little thick. Are you south of Hilo?

Haha yeah it’s rainy over here and these last few weeks have been terrible.
But we’re east towards the most recent lava flow. We actually have been doing work making roads through the recent lava flows.

 

[Old Magnet]

My Milwaukee is manual feed, low two speed model, #3 Morse taper and adjustable base. Works Great.
I don't have any pictures of boring in action but could take pictures of the boring bar components if you like.

 

[gary808]

My Milwaukee is manual feed, low two speed model, #3 Morse taper and adjustable base. Works Great.
I don't have any pictures of boring in action but could take pictures of the boring bar components if you like.

What’s the model on that Milwaukee?
I want to get a better set up that I can slow down. This one is one speed and a bit on the higher side.

 

[Old Magnet]

It's a model 4208-1, 500/250 rpm, #3 Morse taper with adjustable base.
1-1/4" drill capacity motor (soft start), 3/4" capacity chuck and arbor is extra, drill travel is 11"
Weighs about 75 lbs. Handles steel hawg cutters to 5" diameter.

 

[Old Magnet]

Forgot to mention, that's variable speed in the 500/250 rpm ranges.
Also it takes a double u-joint to maintain true parallel alignment.

 

[gary808]

 

[gary808]

Got new weld in bushings machined up and pressed and welded in for the lift.
Cut them from some old D9h cylinder rods.